Telescopic sight for firearms.



No. 820,998. PATENTE MAY 2z, 190s.

' A. swAsBY.

:'nLscoPm SIGHT PoR HRBABMS.

APPLICLTIOI FILED 00T. 1G, NM.

i SHlETl-BIIEET 2.

Wvm'd'ar: Jnyamffr.

PATBNTED MAY 22, 1906.

A. SWASEY.

TELBSGOPIC SIGHT POR FIRBARMS.

LI'PLIOATIOH FILED 00T. 10, 1905.

3 BHEETB'SHEET 3.

Wrwawwa.: [QA:

connected with the cross-wire. l

UNITED STATES S. Patent PATENT OFFICE.

AMaRosE sWAsEY, or CLEVELAND, oHio, AssiGNoR To THE WARNER a sWAsEYcoMPANY, or

CLEVELAND, OHIO, A CORPORATION -OF OHIO.

. TE LESCOP|C SIGHT FOR FIREARMS.

rammed my 22, 190e.

.To all whom it may concern:

Be it known that I, AMBnosE SWASEY, a citizen of the United States,residing in Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in T elescopie Sights forFirearms, of which the following is a specification.

This invention relates to sight devices used to obtain an accurate aimin shooting, and is particularly adapted for firearms, such as rifles.

One of the objects of the invention is to produce a gun-sight of minimumsize and weight and one which can be readily removed from the firearmand conveniently carried by the rifleman.

Another ob'ect of the invention is to provide improve means foradjusting the inclination of the gun-sight and also means for securinthe gun-sight when so adjusted.

. A. urther object is to provide means for adjusting the sight devicelongitudinally along the firearm and means for adjusting the inclinationin such positions.

In the accompanying drawings, illustrating a gun-sight embodying myinvention, Figure 1 shows in side elevation the middle portion of ariile, with the gun-sight mounted thereon. Fig. 2 is a vertical sectionthrough the adjusting-screw of the movable sight, showing also itsthreaded socket. Fig. 3 shows in lan the indicating-sleeve of the screw.Fig. 4 is an end view of the latter. Fig. 5 is a rear elevation of thegun-sight with the eyepiece removed. Fig. 6 is a view on the line 6 ofFig. 5. Fig. 7 is a bottom plan view.' of the bar supportin the sightdevice, partly shown in section. ig. 8 is a vert-ical transverse sectionon the line 8 8 of Fig. 1. Fig. 9 is an enlarged horizontal section onthe line 9 9 indicated in Fig. 5, partly shown in elevation. Fig. 10shows in lan the locking-spring shown in Fig. 9. Pig. 11 shows the platefor the locking-spring. Fig. 12 shows the ad'usting means for thevertical cross-wire. llig. 13 shows the traveling nut Fig. 14 is avertical section taken through the axes of the sight device. Fig. 15.isa transverse section through the sight device on the line 15 15indicated in Fig. 14. Fig. 16 is an enlar ed transverse section on line16 16 indicate in Fig. 14, and Fig. 17 shows the adjustment of theeyepiecelcns The lnvention consists, essentially, of two members, a suporting member that is removabl secure to the firearm and a sight devicet at is adj ustably mounted on the supporting member. The supportingmember is arranged to be removably attached to the irej arm and securedthereto, preferably, in adjusted positions. In the present instance thesupporting member comprises a bar 12, having a straight portion 13,rovided with a dovetailed slot 14. A suitable stri 15 is provided with aportion arranged to s idably enga cure side. The supporting-bar can bereadily attached to the firearm bv sliding it on this strip and may belocated in several longitudinal positions b suitable means. In Figs. 1and 8 the bar 1s shown as provided with a spring-pin 17, having an arm18, which is caused to enter suitable notches 19 in the strip 15 whenthe bar is moved to such positions.

To the rear portion of the bar is suitably pivoted the i ht device,(denoted generally by 20.) 'ne sight device is preferably pivotallymounted on its forward portion at an intermediate portion of the bar 12by a pivot-pin 21 passin through extensions of the frame of the si y itdevice and projecting portions of the ar. means is provided between therear portion of the sight device and the rear portion of the supportin-bar, whereby the sight device can be rocke on the pivot and alsosecured in adjusted positions. At the rear end of the bar 12 is provideda socket portion 22, having a vertical bore that is threaded to engagewith a screw 23 mounted therein. The upper end of the screw has areduced shank with the extremity sli htly rounded and also has a collar24 on t lis shank a short distance from the end. 'lhe end of thescrew-shank engages the bottom of tho sight device, and the movement oftho screw up or down will raise or lower the sight devi ce-that is,rockl itonkits pivotal support. To maintain the engagement of the screwwith the sight device, a member is provided on the bottom thereof. Thismember (shown separately in Fig. 6) comprises a base portion 25, secureSuitable` adjusting l IOO to the bottom of the frame of the sight devicein any suitable manner, such as ,bvscrews. ing downward and thenrearward, that has The base has an arm 26 extendetched on one face of aglass plate 44, that is supported to be horizontally adjustable in orderto provide for drif t or lateral deflection ol the sight.

The plato 44 is secured in a its rear .ortion forked at 27 to engage theframe 45, fast to or a part of a traveling nut 7o screw-co lar 24 and asleeve portion 28 of the' 46. 'l he. plate 1 14 is supported to slidelioriscrew. The innerface of the arm 26is roundzout-ally in a guidemember 47. A screw 48 ed where it engages the collar 24. By this meansthe advancement of the screw upo'n rotation will carry the sight deviceup or down, according to the direction of rotation. The rounded end ofthe screw-shank and also the rounded engaging portion of the arm 26 withthe collar will permit of the swinginf` movement of the sight device onits pivota su ort on the bar 12.

he screw 23 carries a suitable indicating device for showin the amountof adjustment of the sight evice. An annular scale is arranged on thesocket 22, and a sleeve 29 is suitably securedv to the screw to rotatetherewith, which sleeve .has an annular scale extending to its taperedextremity and at that place registering with the annular scale on thesocket. 23 has a reduced shank 30, made somew hat square or poly onal toengage a similar aperture in a hea 31, which head is secured to thescrew-shank by means of a nut 32 eng-aging the threaded end portion ofthe screwshank 30. The sleeve 29 is secured to the head 31 by means ofan internal flange 33 on the sleeve being engaged by a ring 34, that isclamped to the head 31 by means of screws 35 passing through the headand tapped into the ring`34.

Suitable means are provided for securing the si ht device in thepositions to which adjuste by the screw 23. In the present instance thecollar 28 of the screw' is provided with longitudinal ribs. The suporting-bar at the rear end is provided wit a bore 36, one part of whichcommunicates with the bore for the screw 23. In this bore is mounted abolt 37, having a head 38 lying in the portion of the bore communicatingwith the other bore, and a nut 39 on the bolt 37 serves to draw the head38 into enagagement with the collar 28 of the screw, which will serve toprevent rotation of the screw 23.. A spring 40 serves to retract thehead 38 of the screw when the nut is loosened, causing the head todisengagc the collar 28.

The sight device is shown as used with Porro prisms, which deflect theline of si ht four times and considerablj-r shorten the istance of theline of sight. 'rho Porro prisms are rigidly secured to a sin le member,that may be removed from the sight device when The lower end of thescrewl engages the traveling nut 46 and is rotatably supported in a part49 of the frame, but prevented from advancing therein by means of acollar 5() on the screw engaging the inner face of the part 49 and asuitable head 51, secured to the outer end of the screw. The head 51 hasa collar 52 secured near .its periphery and extending inward near theframe member. Inside of this collar is located a retaining meanscomprising a curved springelate 53, secured to the head at one end andaving its other end bent downward and engaging a notched plate 54, faston the frame member. By suitable force being a .plied to the head 51 thescrew will be rotate and the nut advanced in either direction asdesired; but the end of the spring-plate will engage the notched plateand serve to retain t e screw in the adjusted position. A coilspring 55is provided between the nut and the frame to prevent any movement of thenut from backlash.

In Fig. 17 is shown a plan of the adjustment ofthe eyepiece-lens, theouter tube being in section. One of the lens-tubes 60 slides in anotherlens-tube 6l, and the latter has a diagonal slit 62, into which extendsa lug 63 to cause a screw-threaded engagement of these tubes, wherebythey are adjusted. An outer tube 64, secured to the inner tube 60,carries a spring-latch 65, whose end is ridged to engage a ribbed ring66 and secure the tubes in adjusted position, as shown in Fig. 16.

What I claim is- 1. The combination of a supporting member arranged tobe secured to a irearm, a' sight device ivotally mounted on thesupporting mem er, a socket portion on the supporting member having ascrew-threaded ore, a screw operating in said bore and engaging thesight device by one extremity, the screw having an annular slot adjacentsaid end, and an arm secured to the sight device and engaging the screwat said slotted portion.

2. The combination of a supporting member arranged to be secured to afirearm, a sight device pivotally mounted on the supporting member, asocket portion on the supporting member having a screw-threaded Y ore, ascrew operating in said bore and enloo i tra desired. Between the prismsand the eyegaging the sight device by one extremity, the i piece arearranged cross-wires for properly screw having an annular slot adjacentsaid focusing on the desired object. The horiend, an arm secured to thesight dcviccand 5 zontal cross-wire is carried or etched on one engagingthe screw at said siotted portion, a i face of a disk or reticule 42,mounted in the collar on said screw, the supporting member 65 lens-tube43. The vertical cross-wire is having a bore extending transverse tosaid 13o bore and having au enlarged portion communicating therewithLabolt located in said latter bore with its head in said enlarged portion,and a nut'on said bolt arranged to move it and cause its head to engagesaid collar on the screw and lock the latter against movement.

3. The combination with a rearm, of a bar removably attached thereto,pivoting members extending upward at an intermedi.- ate part of the bar,a siglit device having pivoting members at its lower forward portionengaging said pivoting members, wherebj,r tbe sight device is pivoted onthe bar, the supporting member being provided with an 'uprightscrew-threaded bore in its rear por-.-

tion, a screw operatinr in said bore and provided with a collar adjacentits upper end, a bearing member secured to the bottom of the sightdevice at its rear end arranged to engage the end of said screw, thebearing member being provided with a forked arm engaging said screwbelow its collar, whereby the rota.- tion of the screw will swing thesight device on its su port, and a clamping-bolt arranged to lock t escrew against rotation.

4. In a sight device, the combination with the lenses, of a cross-wiremember movable across the axis of the lenses, a frame supporting thecross-wire member, a guide in which said frame is slidable to move thecross-wire member, a nut secured to said member, a screw engaging saidnut to adjust the crosswire member, and a spring-latch for locking thescrew in adjusted positions.

5. In a sight device, the combination with the lenses, of a cross-wiremember movable across the axis of the lenses, a frame supporting thecross-wire member, a guide in which said frame is slidable to move thecross-wire member, a mit secured to said member,.a

screw engaging said nut to adjust the crosswire member, and acoil-spring on the screw for preventing backlash between the screw andnut.

6. In a sight device, the combination with the lenses, of a cross-wiremember movable across the axis of the lenses, a frame supporting thecross-wire member, a guide in which said frame is slidable to move thecross-wire member, a nut secured to said member, a screw engaging saidnut to adjust the crosswirel member, a latch-plateA carried by thedevice, and a spring-latch secured to the head of the screw ard engagingthe latch-plate to lock the screw in adjusted positions.

7. The combination, in a sight device, of a body member having a tubularportion and carrying a lens disposed in the axis of said portion, atubular eyepiece telescoping said tubular port-ion and having ascrew-threaded engagement therewith, a spring-latch carried by one ofsaid tubular members, and an annular latciilate engaged by said latchtolock said inem ers in adjusted positions.

8. The combination of a supporting meniber organized to be secured to afirearm, a sight device pivotally mounted on the supporting member, thesupporting member having a cylindrical portion provided with ascrew-threaded bore, a screw operating in said bore and connected withthe supported member for adjusting the same on its pivotal support, anda cam member, having a tangential enga ement with the shank of the screwfor lociiring the same in adjusted positions.

AMBROSE SWASEY.

Vitnessesa W. M. ALLEN, F. H. RICE.

